When no optimal poll group exists for a qpair,
assignment for round robin happens in spdk_nvmf_tgt_new_qpair().
RDMA transport implments the logic for this assignment in
nvmf_rdma_get_optimal_poll_group().
TCP relied on the spdk_nvmf_tgt_new_qpair() instead.
This resulted in race condition when looking up and assigning
optimal poll groups - see #2113.
To remedy that, TCP now follows the same pattern as RDMA.
Next patch will improve the sock map lookup to fix the #2113.
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I672d22ac15d06309edf87ece5d30f8e8d1095fbb
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10270
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
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